title: Carrier dynamics in an organic magnetic superconductor and related salts κ, λ-(BETS)(2)MCl(4) (M = Fe, Ga).
abstract: In order to compare the carrier dynamics and reveal the origin of differences in their electrical behaviour, time-resolved reflectivity changes were measured on single crystals of the title compounds. The observed relaxation behaviour explained well their electrical behaviour, and indicated that different conduction mechanisms dominated κ- and λ-type BETS salts, irrespective of local spins, at about 8-100 K; the electrical behaviour of the κ-type salts is governed by relaxation times of carriers and/or density of states at the Fermi levels, while that of the λ-type salts is dominated by the latter.
authors.affiliation: Graduate School of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0810, Japan. tnaito@sci.hokudai.ac.jp
authors.forename: T
authors.initials: T
authors.lastname: Naito
authors.forename: S
authors.initials: S
authors.lastname: Matsuo
authors.forename: T
authors.initials: T
authors.lastname: Inabe
authors.forename: Y
authors.initials: Y
authors.lastname: Toda